How to access a particular internal storage directory in android?

Question

I am trying to learn android programming. As a beginning, I am trying to understand the internal file system & accessing them. Any help is highly appreciated. Following are my challenges:

How to create a 'TEST' folder through the android emulator/Android device monitor? I need to create the folder where the alarms, download, DCIM folder are present.
What is the absolute directory path to the 'TEST' folder created? Is it possible to access the TEST folder using the code below:
```
List<File> list = Environment.getDataDirectory()+"/TEST".listFiles();
```
Does any permission to be mentioned in the manifest for read/write to internal storage?

PS: I use Android Studio.

have you read this: http://developer.android.com/training/basics/data-storage/files.html ? — Gavriel, Jan 19 '16 at 16:18
Thanks @Gavriel . Will read it & see. Meanwhile can you please help me with the point 1? — Adi, Jan 19 '16 at 16:45
it's not even clear whether you want a solution in Java or from the command-line via adb — Gavriel, Jan 19 '16 at 16:47
Sorry for the confusion. I don't want to create the folder programatically. I just need to make folder named 'TEST' available in the internal storage. ( So that my code can assume that the particular folder will be available while execution) — Adi, Jan 19 '16 at 17:09
http://stackoverflow.com/questions/13373489/adb-shell-command-mkdir-for-creating-a-directory might help — Gavriel, Jan 19 '16 at 17:11
Why not to use the "files" folder? This folder you can access WITHOUT any permission needed. Its located under data/data/yourAppPkg/files — Martin Pfeffer, Jan 19 '16 at 19:32

score 2 · Accepted Answer · edited May 23 '17 at 12:13

2

You would want something along the lines of

File TEST = new File(Environment.getExternalStorageDirectory(), "TEST");
TEST.mkdir(); // make directory may want to check return value
String path = TEST.getAbsolutePath(); // get absolute path

and permissions

<manifest ...>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    ...
</manifest>

Further reference

edited May 23 '17 at 12:13

Community

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answered Jan 19 '16 at 17:53

denixtry

2,928
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1

Please note that permission model has been changed as of Marshmallow. – frogatto Jan 19 '16 at 19:21
May I know some more details please? – Adi Jan 22 '16 at 13:18
What kind of details are you looking for? – denixtry Jan 23 '16 at 06:29
2

why getExternalStorage() leading to internal storage? – JAMSHAID Sep 19 '18 at 10:21

score 0 · Answer 2 · answered Jun 21 '18 at 19:18

0

File file = new File("storage/emulated/0","yourfoldername/");

This worked for me if this doesn't help, then in use

File(Environment.getobbdir(),"yourfoldername");

answered Jun 21 '18 at 19:18

divine_rythm

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How to access a particular internal storage directory in android?

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